Oscillatory shear flow of nematic liquid crystals
作者:
Wesley R. Burghardt,
期刊:
Journal of Rheology
(AIP Available online 1991)
卷期:
Volume 35,
issue 1
页码: 49-62
ISSN:0148-6055
年代: 1991
DOI:10.1122/1.550208
出版商: The Society of Rheology
关键词: Liquid crystals;Frank elasticity effects, liquid crystals;SHEAR FLOW;NEMATIC CRYSTALS;OSCILLATIONS;POLYMERS;VISCOELASTICITY
数据来源: AIP
摘要:
The response of a nematic liquid crystal to oscillating shear flow has been calculated. In both low and high frequency limits, the macroscopic response is dominated by viscous effects, under the influence of dominant boundary‐induced and hydrodynamic torques, respectively. At intermediate frequencies, distortional (Frank) elasticity lends the macroscopic response viscoelastic character, exhibiting a significant effective storage modulus. The possible influence of distortional elasticity on the oscillatory response of liquid crystal polymers is qualitatively discussed.
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